Washington (CNN) — For many conservative Christians, this week’s Family Research Council shooting that wounded a security guard and that the FBI is investigating as a possible act of domestic terrorism was hardly a one-off attack.

Rather, they say the incident is the latest evidence in what they allege is a growing war on religion from the left, an offensive they say extends from the Obama White House down to the liberal grass roots and even foreign governments.

“It’s easy to brush aside this incident as one act of a crazy man until you consider the past two weeks,” activist Dana Loesch wrote on the conservative site Breitbart.com in a piece titled “A literal war on religion?”